CN107559239B - A kind of centrifugal gas compressor attemperator with center nozzle structure - Google Patents
A kind of centrifugal gas compressor attemperator with center nozzle structure Download PDFInfo
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- CN107559239B CN107559239B CN201710858573.1A CN201710858573A CN107559239B CN 107559239 B CN107559239 B CN 107559239B CN 201710858573 A CN201710858573 A CN 201710858573A CN 107559239 B CN107559239 B CN 107559239B
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Abstract
The present invention provides a kind of centrifugal gas compressor attemperator with center nozzle structure, the centrifugal gas compressor includes compressor case, the compressor case includes the air inlet being open to compressor rotating shaft direction and the intake channel being connected with the air inlet, it further include compressor impeller, the compressor impeller is rotatable centered on the rotation axis of rotary shaft to be supported in the compressor case, for being compressed to the gas flowed into from air inlet, deflection cone is equipped with close to the side of air inlet on the compressor impeller, the deflection cone is equipped with desuperheater spray nozzle into the intake channel at air inlet direction, the desuperheater spray nozzle is used to spray desuperheat liquid to deflection cone, the angle of liquid is sprayed by setting desuperheater spray nozzle, the liquid for spraying desuperheater spray nozzle is inhaled into the logical of compressor impeller by deflection cone It is blended in road with compressor mainstream gas, improves attemperator effect, to reduce work done during compression, improve compressor efficiency.
Description
Technical field
The present invention relates to gas compressor technical fields, more particularly, to a kind of centrifugation with center nozzle structure
Gas compressor attemperator.
Background technique
The gas compressions such as air, water vapour technology has wide in fields such as chemical industry, refrigerating industry, wastewater treatments
Application prospect and huge development potentiality.Machinery pressure steam distillation technology, Superheated Steam Drying Technology and make in Industrial Engineering
Steam blower etc. all refers to or dependent on water vapour compress technique.Gas compression technology is studied and grasped, compression can be improved
Efficiency, improves reliability and the service life of system, so that the revolution of related fields be brought to sexually revise.
Compressor only sucks gas under normal circumstances, however in running, often since gas-liquid separator is transported
Unstable, excessively high etc. the reasons of evaporator liquid level of row, or drop artificially is sprayed into compressor inlet in order to reduce work done during compression
Process, can all cause compressor sucking is the mixture of gas and drop, therefore compression process is often the pressure of gas-liquid mixed
Compression process contains hydraulic compression process.In air, the compression process of this gas-liquid mixed is referred to as Wet Compression, by gas turbine
Expert Kleinschmidt is proposed at the end of the forties in last century.Most of current Wet Compression is both in gas turbine field
The research of humid air compression process, the GT15000 combustion engine of Ukraine, GE company, the U.S. LM6000 boat remodeling gas turbine at
Function is improved unit output power using wet compression technology.
In the during containing hydraulic compression of gas, it is heat transfer and mass transport process that drop and gas, which mutually blend carry out,.Drop
Heat absorption evaporation, cools down mainstream, reduces mainstream temperature, reduces the degree of superheat of superheated steam, so that mainstream gas
Compression process closer to etc. saturations compression, make temperature of the Outlet Gas Temperature lower than actual compression when, reduce compression process
Wasted work, improve compression efficiency.
But the presence containing water droplet during hydraulic compression, also bring along many adverse effects.Due to being containing hydraulic compression process
One two-phase heat and mass transfer process, mechanism are extremely complex.If conventional attemperator is taken to use in entire compressor from low radius
Even level's spray mode on to high radial height, can cause following problem: one, the followability difference of drop such as will affect at the saturation pressures
The effect of contracting.Since drop is sprayed into high radius level, keeps it very short in the residence time of compressor, reached millisecond amount
Grade；If drop cannot follow stream line motion well, evaporation time can be greatly reduced, to be unable to reach the effect of cooling mainstream
The ability of fruit, in this way reduction work done during compression will reduce, and Wet Compression effect also decreases；Two, due to the drop of penetrating and compression
The rotation circumferential direction relative velocity of the high radius blade of machine is very high, and this drop and the big relative velocity of compressor blade are to cause liquid
Blade surface at the high radius of high-speed impact is dripped, compressor blade impingment corrosion is not only easily lead to, blade erosion is caused to destroy,
More cause additional internal flow loss；It the problems such as to cause compressor efficiency decline, surge margin to reduce, substantially reduces
The reliability of compressor.
Summary of the invention
The present invention provides a kind of one kind for overcoming the above problem or at least being partially solved the above problem and sprays with center
The centrifugal gas compressor attemperator of mouth structure, solve the cooling evaporation time of liquid in the prior art not enough, can not effectively reach
To the effect for cooling down mainstream, and cool down the larger problem for causing compressor blade easy to damage of droplet impact.
According to an aspect of the present invention, a kind of gas compressor attemperator with center nozzle structure is provided, it is described
Gas compressor includes compressor case, the compressor case include to compressor rotating shaft direction be open air inlet and
The intake channel being connected with the air inlet further includes compressor impeller, and the compressor impeller is with the rotation axis of rotary shaft
Center is rotatable to be supported in the compressor case, for being compressed to the gas flowed into from air inlet, the compression
It is equipped with desuperheater spray nozzle close to the side of air inlet on machine impeller, the desuperheater spray nozzle is for spraying desuperheat liquid, by desuperheat
Liquid is injected in the channel of compressor impeller.
Preferably, the side on the compressor impeller close to air inlet is additionally provided with deflection cone, the deflection cone is used
In the channel that desuperheat liquid and gas are imported into compressor impeller.
Preferably, the deflection cone conehead is L, the spray of the desuperheater spray nozzle at a distance from the desuperheater spray nozzle
Liquid direction is sprayed along the centerline direction of deflection cone with θ angle, and the minimum clearance of the compressor case and the deflection cone isd min , maximal clearance isd max , the value range of the L be [d min /tanθ, d max /tanθ]。
Preferably, the deflection cone is integrally formed, outer surface is shiny surface.
Preferably, the deflection cone is in cone or bullet-headed, cone of the desuperheater spray nozzle set on deflection cone
First side.
Preferably, the compressor impeller connects with the deflection cone, the deflection cone is with compressor impeller in phase
The flush with outer surface at place is connect, is used for desuperheat liquid guide flow to compressor impeller.
Preferably, the compressor impeller is sheathed in the rotary shaft, the deflection cone is fixed on the rotation
Connect on axis and with the compressor impeller, and the axial line of the deflection cone and the rotation axis coincident.
Preferably, the desuperheater spray nozzle is connected with inlet tube, the inlet tube is fixed on the compressor case
It goes up and extends to outside compressor case.
Preferably, the desuperheat liquid is water.
The present invention proposes a kind of centrifugal gas compressor attemperator with center nozzle structure, makes its spray of desuperheater spray nozzle
Liquid direction is sprayed along the centerline direction of deflection cone with angle theta, and the nozzle in air intake duct is to edge at the entrance center axis of deflection cone
Deflection cone surface direction water spray, due to the negative pressure that compressor impeller rotation generates when work, the liquid that desuperheater spray nozzle sprays is logical
It crosses deflection cone and is drawn into the channel of compressor impeller and blended with compressor mainstream gas, enhancing liquid and mainstream followability is kept away
Exempt from directly to hit, avoids impacting water erosion as caused by excessive with compressor blade relative velocity, and can increase drop and flowing
Evaporation time in road, improves the effect of attemperator, to reduce work done during compression, improves compressor efficiency.
Detailed description of the invention Fig. 1 is the gas compressor attemperator structural block diagram according to the embodiment of the present invention；
Fig. 2 is according to I part-structure enlarged drawing in Fig. 1 of the embodiment of the present invention.
Specific embodiment with reference to the accompanying drawings and examples, further retouches a specific embodiment of the invention work in detail
It states.The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
As shown in Figure 1, showing a kind of gas compressor attemperator with center nozzle structure, the gas pressure in figure
Contracting machine includes compressor case 6, the compressor case 6 include to compressor rotating shaft direction be open air inlet 1 and with
The connected intake channel of the air inlet, further includes compressor impeller 5, the compressor impeller 5 is with the rotation axis of rotary shaft
Center is rotatable to be supported in the compressor case 6, and rotary shaft is driven by high-speed motor 8, is leaned on the compressor impeller 5
The side of nearly gas compressor air inlet 1 is successively arranged deflection cone 3, desuperheater spray nozzle 2, and the desuperheater spray nozzle 2 is for spraying
Desuperheat liquid, the deflection cone is for mainstream and desuperheat liquid to be imported into the channel of compressor impeller 5.
In the present embodiment, the deflection cone is integrally formed, and outer surface is shiny surface；Specifically, above-mentioned deflection cone 3
In cone or it is bullet-headed, radius by conehead to cone tail be gradually increased, the desuperheater spray nozzle 2 be set to deflection cone 3 cone
First side.The compressor impeller 5 connects with the deflection cone 3, and the deflection cone 3 is with compressor impeller 5 in the outer of joint
Flush is used for desuperheat liquid guide flow to compressor impeller 5.Desuperheat liquid and compressed gas is enabled to be guided to compression
Machine impeller 5.
Specifically, the compressor impeller is sheathed in the rotary shaft, the deflection cone is fixed in the rotary shaft
And connect with the compressor impeller, and the axial line of the deflection cone and the rotation axis coincident.
In the present embodiment, the compressor impeller 5 is equipped with the rotatable wheel hub 12 centered on rotation axis, described
Wheel hub 12 along rotation axis profile edge camber, the wheel hub 12 along the section of vertical at circle, and it is described
Wheel hub 12 is connect close to the side of air inlet 1 with the deflection cone 3, the axial line of the deflection cone 3 and the rotation axis weight
It closes, and radius of the deflection cone 3 with wheel hub 12 in junction is equal, so that wheel hub 12 is overlapped with deflection cone 3 on the surface of junction,
Enable desuperheat liquid by deflection cone 3 introduce wheel hub 12, and by wheel hub 12 enter compressor impeller channel in pressure
The blending of contracting machine mainstream gas.
In the present embodiment, 12 outer peripheral surface of wheel hub is equipped with the more pieces of blade 13(wings), the wheel hub 12 and the rotation
Axis combines, and by being driven in rotation, blade 13 sucks air from air inlet 1, and is compressed by intake channel, in this reality
It applies in example, the shape of blade 13 is not particularly limited, and has the edge i.e. leading edge 11 of upstream side, the edge in downstream side in blade up stroke
Portion, that is, rear 9, edge, that is, outer peripheral edge 10 of radial outside, the outer peripheral edge 10 refer to that the guard section of air compressor object is covered
Side edge portions, and outer peripheral edge 10 is configured near the inner surface by guard section.
In the present embodiment, compressor impeller 5 is rotated centered on rotation axis by the rotary driving force of rotary shaft
Driving, outside air are introduced into from air inlet 1, are flowed between more pieces of blades 13 of compressor impeller 5, and desuperheater spray nozzle
The liquid that spray 2 goes out is inhaled into the channel of compressor impeller 5 via deflection cone 3 and blends with compressor mainstream gas, attemperator
The track characteristic that the drop that nozzle 2 sprays is presented is to move to high radius by minor radius along deflection cone 3, i.e., from desuperheat liquid
Body is led into 12 surface of wheel hub and is entered in blade 13 and blends with air by deflection cone 3, in more pieces of blades of compressor impeller 5
It is flowed between 13, mainly after pressure rising, radially outside diffuses to gyrate air flue 7 and is discharged.Then, make
It is supplied for the air inlet of internal combustion engine.In compression process, water droplet evaporation absorbs heat, and mainstream is cooled down, and temperature decline is comprehensive
Close result make compression process closer to etc. saturations compression, reduce work done during compression.
In the present embodiment, the desuperheater spray nozzle is connected with inlet tube, and the inlet tube is fixed on the compressor machine
On shell and extend to outside compressor case.
In the present embodiment, as shown in Fig. 2, Fig. 2 is the enlarged drawing of the part I in Fig. 1, in order to reduce desuperheat liquid knockout
Blade surface causes additional loss, needs the desuperheat liquid for spraying desuperheater spray nozzle along the direction of deflection cone tangent line, makes to spray
Drop out will be moved along the grain direction of mainstream, cause additional loss to reduce drop and hit blade surface.
The deflection cone conehead is L at a distance from the desuperheater spray nozzle, and the hydrojet direction of the nozzle is along the center line side of deflection cone
It is sprayed to θ angle, the minimum clearance of the compressor case and the deflection cone isd min , maximal clearance isd max , the L's
Value range be [d min /tanθ, d max /tanθ].The direction θ of the desuperheater spray nozzle is set according to compressor blade, deflection cone
Meter determines.
At work, mainstream gas enters compressor from compressor case air inlet 1 to attemperator in the present embodiment, subtracts
Warm device nozzle 2, close to the front in axle center, is supplied water on 3 head of compressor inlet deflection cone by water inlet pipe 4, hydrojet direction edge
The centerline direction of deflection cone 3 is with the ejection of θ angle.Under the drive of high-speed motor 8,5 rotary compression mainstream of compressor impeller.Due to
The negative pressure that compressor impeller rotation generates, the liquid that desuperheater spray nozzle 2 sprays are inhaled into compressor impeller 5 via deflection cone 3
Channel in compressor mainstream gas blend, the track characteristic that the drop of ejection is presented be along deflection cone 3 by smaller part
Diameter moves to high radius.In compression process, water droplet evaporation absorbs heat, and mainstream is cooled down, temperature decline.Synthesis result makes
Compression process closer to etc. saturations compression, reduce work done during compression.And since the injection direction of desuperheater spray nozzle 2 makes along leading
The drop of the tangential direction of flow cone 3, ejection will be moved along the grain direction of mainstream, so that reducing drop hits blade surface
Cause additional loss.The heat-transfer effect between drop and mainstream is increased, the efficiency containing hydraulic compression is improved.In addition to this,
Drop due to hitting blade reduces, and drop water erosion caused by blade will die down more, so that the service life of compressor obtains
Extend, reliability is improved.Final gas compressed pressure rise, is discharged from compressor case air flue 7.
In the present embodiment, the desuperheat liquid is water, can also can absorb the chemical property of heat by evaporation for other
Stable liquid.
In conclusion the present invention propose it is a kind of have centrifugal gas compressor attemperator make desuperheater spray nozzle compressor into
Port is drained by deflection cone, and hydrojet direction sprays along the centerline direction of deflection cone with angle theta, the nozzle in air intake duct to
It sprays water at the entrance center axis of deflection cone along deflection cone surface direction, due to the negative pressure that compressor impeller rotation generates when work,
The liquid that desuperheater spray nozzle sprays is inhaled into the channel of compressor impeller by deflection cone and is blended with compressor mainstream gas,
The relative velocity to the liquid of ejection relative to compressor blade can be reduced, is avoided due to excessive with compressor blade relative velocity
Caused by impact water erosion, and can increase evaporation time of the drop in runner, the effect of attemperator improved, to reduce compression
Function improves compressor efficiency.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (7)
1. a kind of centrifugal gas compressor attemperator with center nozzle structure, the centrifugal gas compressor includes compressor
Casing, the compressor case include the air inlet being open to compressor rotating shaft direction and the air inlet being connected with the air inlet
Access further includes compressor impeller, and the compressor impeller is rotatable centered on the rotation axis of rotary shaft to be supported in institute
It states in compressor case, for being compressed to the gas flowed into from air inlet, which is characterized in that leaned on the compressor impeller
The side of nearly air inlet is equipped with desuperheater spray nozzle, and desuperheat liquid is injected to by the desuperheater spray nozzle for spraying desuperheat liquid
In the channel of compressor impeller；
Side on the compressor impeller close to air inlet is additionally provided with deflection cone, and the deflection cone is used for desuperheat liquid and gas
Body is imported into the channel of compressor impeller；
The deflection cone conehead is L at a distance from the desuperheater spray nozzle, and the hydrojet direction of the desuperheater spray nozzle is along deflection cone
Centerline direction with the ejection of θ angle, the minimum clearance of the compressor case and the deflection cone is dmin, maximal clearance is
dmax, the value range of the L is [dmin/tanθ, dmax/tanθ]。
2. the centrifugal gas compressor attemperator according to claim 1 with center nozzle structure, which is characterized in that institute
It states deflection cone to be integrally formed, outer surface is shiny surface.
3. the centrifugal gas compressor attemperator according to claim 1 with center nozzle structure, which is characterized in that institute
Stating deflection cone is in cone or bullet-headed, and the desuperheater spray nozzle is set to the conehead side of deflection cone.
4. the centrifugal gas compressor attemperator according to claim 3 with center nozzle structure, which is characterized in that institute
It states compressor impeller to connect with the deflection cone, the deflection cone and compressor impeller are used in the flush with outer surface of joint
By desuperheat liquid guide flow to compressor impeller.
5. the centrifugal gas compressor attemperator according to claim 4 with center nozzle structure, which is characterized in that institute
Compressor impeller is stated to be sheathed in the rotary shaft, the deflection cone be fixed in the rotary shaft and with the compressor impeller
Connect, and the axial line of the deflection cone and the rotation axis coincident.
6. the centrifugal gas compressor attemperator according to claim 1 with center nozzle structure, which is characterized in that institute
It states desuperheater spray nozzle and is connected with inlet tube, the inlet tube is fixed on the compressor case and extends to outside compressor case
Portion.
7. the centrifugal gas compressor attemperator according to claim 1 with center nozzle structure, which is characterized in that institute
Stating desuperheat liquid is water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710858573.1A CN107559239B (en) | 2017-09-20 | 2017-09-20 | A kind of centrifugal gas compressor attemperator with center nozzle structure |
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| CN201710858573.1A CN107559239B (en) | 2017-09-20 | 2017-09-20 | A kind of centrifugal gas compressor attemperator with center nozzle structure |
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| CN107559239B true CN107559239B (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4170186A1 (en) * | 2021-10-21 | 2023-04-26 | Siemens Energy Global GmbH & Co. KG | Compressor, in particular radial compressor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749932A (en) * | 2020-07-07 | 2020-10-09 | 中国空气动力研究与发展中心超高速空气动力研究所 | Centrifugal vacuum pump with water spray cooling device |
| CN112856384B (en) * | 2021-01-11 | 2022-10-14 | 内蒙古工业大学 | Self preservation protects formula desuperheating water adjusting device |
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| CN206129715U (en) * | 2016-11-09 | 2017-04-26 | 烟台荏原空调设备有限公司 | Centrifugal compressor and guiding device thereof |
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| JP2000120596A (en) * | 1998-10-12 | 2000-04-25 | Ishikawajima Harima Heavy Ind Co Ltd | Water spray for turbocompressor |
| CN1441218A (en) * | 2003-04-04 | 2003-09-10 | 马平均 | Water pump type heat exchanger |
| CN1878931A (en) * | 2003-09-12 | 2006-12-13 | 麦斯国际有限公司 | Sealing arrangement in a compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4170186A1 (en) * | 2021-10-21 | 2023-04-26 | Siemens Energy Global GmbH & Co. KG | Compressor, in particular radial compressor |
| WO2023066585A1 (en) * | 2021-10-21 | 2023-04-27 | Siemens Energy Global GmbH & Co. KG | Compressor, in particular radial compressor |
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| CN107559239A (en) | 2018-01-09 |
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